NASCAR’s open test takes place this afternoon and into the early evening at Las Vegas Motor Speedway, site of Sunday’s Kobalt 400, the third round of the already-flying 2014 NASCAR Sprint Cup Series season.

Today, on NASCAR AMERICA (5 p.m. ET on NBCSN and online on NBC Sports Live Extra), there will be more of a preview of the 400-mile race that sees the premiere of the new aero changes coming to the Generation-6 cars for the first time on a 1.5-mile oval.

Thursday’s show features analysts Kyle Petty and Ken Schrader, and also a great feature by legendary announcer Eli Gold that salutes Missouri’s rich racing history with the legendary pipes of Eli Gold.

In case you can’t be near a TV, you can watch today’s show online at the link above (or below). Just be sure to have your username and password from your cable/satellite/telco provider handy so your subscription can be verified.

Once you plug those pieces of information in, you’ll have access to the stream.